http://www.fandango.com/promo/samsungbogo

Just enter your zip code to find a theater in your area that offers online ticketing through Fandango. Then buy 2 or more tickets to the same showing of any film and the price of one ticket will be free (up to a $15 value!). Note that this BOGO offer is only valid for tickets purchased through June 17th at 11:59PM PST. Limit one free movie ticket per transaction per customer.